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Point-by-point inscription of sub-mum period fiber Bragg gratings with good spectral quality, 1st order Bragg resonances within the C-band is achieved. Distinct polarization characteristics are further observed in these fiber gratings.
The fabrication of micro-channels in single-mode optical fibers is demonstrated using focused femtosecond laser processing and chemical etching. Straight line micro-channels are achieved based on a simple technique which overcomes limitations imposed by the fiber curved surface
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